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Physics-Regis

StRegis-Farrand Motion and Newton's Laws

QuestionAnswer
A change in position measured by distance and time motion
Distance an object travels divided by the time it takes speed
an object's speed and direction velocity
the rate at which velocity changes acceleration
speeding up positive acceleration
slowing down negative acceleration
a push or a pull force
net forces equal zero; there is no motion. balanced forces
the sum of all forces acting on an object net force
mass times velocity momentum
unit of measure for momentum kgm/s
total distance divided by total time average speed
the property of matter which resists motion inertia
a force that opposes motion between surfaces that touch friction
change over time rate
rate of motion at any given moment instantaneous speed
relative to or measured from a reference point position
force exerted by a mass gravity
a measure of gravity on an object weight
unit of measure of mass kg
unit of measure of weight N (newtons)
F=ma Newton's Second Law of Motion
An object at rest tends to stay at rest unless acted on by an outside force, and an object in motion tends to stay in motion unless acted on by an outside force Newton's First Law of Motion
for every action there is an equal and opposite reaction Newton's Third Law of Motion
acceleration due to gravity 9.8 m/s/s
the highest velocity reached by a falling object terminal velocity
forward motion, parallel to earth surface horizontal motion
gravitational motion perpendicular to earth surface vertical motion
acceleration toward the center of a curved circular path centripetal acceleration
Created by: bill.farrand
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